instiki/lib/chunks/category.rb

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require 'chunks/chunk'
require 'stringsupport'
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# The category chunk looks for "category: news" on a line by
# itself and parses the terms after the ':' as categories.
# Other classes can search for Category chunks within
# rendered content to find out what categories this page
# should be in.
#
# Category lines can be hidden using ':category: news', for example
class Category < Chunk::Abstract
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CATEGORY_PATTERN = /^(:)?category\s*:(.*)$/i
def self.pattern() CATEGORY_PATTERN end
attr_reader :hidden, :list
def initialize(match_data, content)
super(match_data, content)
@content = content
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@hidden = match_data[1]
@list = match_data[2].split(',').map { |c| clean = c.purify.strip.escapeHTML; clean if clean != ''}
@list.compact!
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@unmask_text = ''
if @hidden
@unmask_text = ''
else
category_urls = @list.map { |category| url(category) }.join(', ')
@unmask_text = '<div class="property"> category: ' + category_urls + '</div>'
end
end
# TODO move presentation of page metadata to controller/view
def url(category)
%{<a class="category_link" href="#{@content.url_generator.url_for :web => @content.web.address,
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:action => 'list', :only_path => true}/#{CGI.escape(category)}">#{category}</a>}
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end
end